<?php
namespace CodeIgniter\Router;
/**
* CodeIgniter
*
* An open source application development framework for PHP
*
* This content is released under the MIT License (MIT)
*
* Copyright (c) 2014-2018 British Columbia Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @package CodeIgniter
* @author CodeIgniter Dev Team
* @copyright 2014-2018 British Columbia Institute of Technology (https://bcit.ca/)
* @license https://opensource.org/licenses/MIT MIT License
* @link https://codeigniter.com
* @since Version 3.0.0
* @filesource
*/
use CodeIgniter\Autoloader\FileLocator;
use CodeIgniter\Router\Exceptions\RouterException;
/**
* Class RouteCollection
*
* @todo Implement nested resource routing (See CakePHP)
*
* @package CodeIgniter\Router
*/
class RouteCollection implements RouteCollectionInterface
{
/**
* The namespace to be added to any Controllers.
* Defaults to the global namespaces (\)
*
* @var string
*/
protected $defaultNamespace = '\\';
/**
* The name of the default controller to use
* when no other controller is specified.
*
* Not used here. Pass-thru value for Router class.
*
* @var string
*/
protected $defaultController = 'Home';
/**
* The name of the default method to use
* when no other method has been specified.
*
* Not used here. Pass-thru value for Router class.
*
* @var string
*/
protected $defaultMethod = 'index';
/**
* The placeholder used when routing 'resources'
* when no other placeholder has been specified.
*
* @var string
*/
protected $defaultPlaceholder = 'any';
/**
* Whether to convert dashes to underscores in URI.
*
* Not used here. Pass-thru value for Router class.
*
* @var boolean
*/
protected $translateURIDashes = false;
/**
* Whether to match URI against Controllers
* when it doesn't match defined routes.
*
* Not used here. Pass-thru value for Router class.
*
* @var boolean
*/
protected $autoRoute = true;
/**
* A callable that will be shown
* when the route cannot be matched.
*
* @var string|\Closure
*/
protected $override404;
/**
* Defined placeholders that can be used
* within the
*
* @var array
*/
protected $placeholders = [
'any' => '.*',
'segment' => '[^/]+',
'alphanum' => '[a-zA-Z0-9]+',
'num' => '[0-9]+',
'alpha' => '[a-zA-Z]+',
'hash' => '[^/]+',
];
/**
* An array of all routes and their mappings.
*
* @var array
*/
protected $routes = [
'*' => [],
'options' => [],
'get' => [],
'head' => [],
'post' => [],
'put' => [],
'delete' => [],
'trace' => [],
'connect' => [],
'cli' => [],
];
/**
* Array of routes options
*
* @var array
*/
protected $routesOptions = [];
/**
* The current method that the script is being called by.
*
* @var
*/
protected $HTTPVerb;
/**
* The default list of HTTP methods (and CLI for command line usage)
* that is allowed if no other method is provided.
*
* @var array
*/
protected $defaultHTTPMethods = [
'options',
'get',
'head',
'post',
'put',
'delete',
'trace',
'connect',
'cli',
];
/**
* The name of the current group, if any.
*
* @var string
*/
protected $group = null;
/**
* The current subdomain.
*
* @var string
*/
protected $currentSubdomain = null;
/**
* Stores copy of current options being
* applied during creation.
*
* @var null
*/
protected $currentOptions = null;
/**
* A little performance booster.
*
* @var boolean
*/
protected $didDiscover = false;
/**
* @var \CodeIgniter\Autoloader\FileLocator
*/
protected $fileLocator;
/**
* @var \Config\Modules
*/
protected $moduleConfig;
//--------------------------------------------------------------------
/**
* Constructor
*
* @param FileLocator $locator
* @param Config/Modules $moduleConfig
*/
public function __construct(FileLocator $locator, $moduleConfig)
{
// Get HTTP verb
$this->HTTPVerb = strtolower($_SERVER['REQUEST_METHOD'] ?? 'cli');
$this->fileLocator = $locator;
$this->moduleConfig = $moduleConfig;
}
//--------------------------------------------------------------------
/**
* Registers a new constraint with the system. Constraints are used
* by the routes as placeholders for regular expressions to make defining
* the routes more human-friendly.
*
* You can pass an associative array as $placeholder, and have
* multiple placeholders added at once.
*
* @param string|array $placeholder
* @param string $pattern
*
* @return mixed
*/
public function addPlaceholder($placeholder, string $pattern = null): RouteCollectionInterface
{
if (! is_array($placeholder))
{
$placeholder = [$placeholder => $pattern];
}
$this->placeholders = array_merge($this->placeholders, $placeholder);
return $this;
}
//--------------------------------------------------------------------
/**
* Sets the default namespace to use for Controllers when no other
* namespace has been specified.
*
* @param $value
*
* @return mixed
*/
public function setDefaultNamespace(string $value): RouteCollectionInterface
{
$this->defaultNamespace = filter_var($value, FILTER_SANITIZE_STRING);
$this->defaultNamespace = rtrim($this->defaultNamespace, '\\') . '\\';
return $this;
}
//--------------------------------------------------------------------
/**
* Sets the default controller to use when no other controller has been
* specified.
*
* @param $value
*
* @return mixed
*/
public function setDefaultController(string $value): RouteCollectionInterface
{
$this->defaultController = filter_var($value, FILTER_SANITIZE_STRING);
return $this;
}
//--------------------------------------------------------------------
/**
* Sets the default method to call on the controller when no other
* method has been set in the route.
*
* @param $value
*
* @return mixed
*/
public function setDefaultMethod(string $value): RouteCollectionInterface
{
$this->defaultMethod = filter_var($value, FILTER_SANITIZE_STRING);
return $this;
}
//--------------------------------------------------------------------
/**
* Tells the system whether to convert dashes in URI strings into
* underscores. In some search engines, including Google, dashes
* create more meaning and make it easier for the search engine to
* find words and meaning in the URI for better SEO. But it
* doesn't work well with PHP method names....
*
* @param boolean $value
*
* @return mixed
*/
public function setTranslateURIDashes(bool $value): RouteCollectionInterface
{
$this->translateURIDashes = $value;
return $this;
}
//--------------------------------------------------------------------
/**
* If TRUE, the system will attempt to match the URI against
* Controllers by matching each segment against folders/files
* in APPPATH/Controllers, when a match wasn't found against
* defined routes.
*
* If FALSE, will stop searching and do NO automatic routing.
*
* @param boolean $value
*
* @return RouteCollectionInterface
*/
public function setAutoRoute(bool $value): RouteCollectionInterface
{
$this->autoRoute = $value;
return $this;
}
//--------------------------------------------------------------------
/**
* Sets the class/method that should be called if routing doesn't
* find a match. It can be either a closure or the controller/method
* name exactly like a route is defined: Users::index
*
* This setting is passed to the Router class and handled there.
*
* @param callable|null $callable
*
* @return RouteCollectionInterface
*/
public function set404Override($callable = null): RouteCollectionInterface
{
$this->override404 = $callable;
return $this;
}
//--------------------------------------------------------------------
/**
* Returns the 404 Override setting, which can be null, a closure
* or the controller/string.
*
* @return string|\Closure|null
*/
public function get404Override()
{
return $this->override404;
}
//--------------------------------------------------------------------
/**
* Will attempt to discover any additional routes, either through
* the local PSR4 namespaces, or through selected Composer packages.
* (Composer coming soon...)
*/
protected function discoverRoutes()
{
if ($this->didDiscover)
{
return;
}
// We need this var in local scope
// so route files can access it.
$routes = $this;
/*
* Discover Local Files
*/
if ($this->moduleConfig->shouldDiscover('routes'))
{
$files = $this->fileLocator->search('Config/Routes.php');
foreach ($files as $file)
{
// Don't include our main file again...
if ($file === APPPATH . 'Config/Routes.php')
{
continue;
}
include $file;
}
}
/*
* Discover Composer files (coming soon)
*/
$this->didDiscover = true;
}
//--------------------------------------------------------------------
/**
* Sets the default constraint to be used in the system. Typically
* for use with the 'resource' method.
*
* @param string $placeholder
*
* @return RouteCollectionInterface
*/
public function setDefaultConstraint(string $placeholder): RouteCollectionInterface
{
if (array_key_exists($placeholder, $this->placeholders))
{
$this->defaultPlaceholder = $placeholder;
}
return $this;
}
//--------------------------------------------------------------------
/**
* Returns the name of the default controller. With Namespace.
*
* @return string
*/
public function getDefaultController(): string
{
return $this->defaultController;
}
//--------------------------------------------------------------------
/**
* Returns the name of the default method to use within the controller.
*
* @return string
*/
public function getDefaultMethod(): string
{
return $this->defaultMethod;
}
//--------------------------------------------------------------------
/**
* Returns the default namespace as set in the Routes config file.
*
* @return string
*/
public function getDefaultNamespace(): string
{
return $this->defaultNamespace;
}
//--------------------------------------------------------------------
/**
* Returns the current value of the translateURIDashses setting.
*
* @return mixed
*/
public function shouldTranslateURIDashes(): bool
{
return $this->translateURIDashes;
}
//--------------------------------------------------------------------
/**
* Returns the flag that tells whether to autoRoute URI against Controllers.
*
* @return boolean
*/
public function shouldAutoRoute(): bool
{
return $this->autoRoute;
}
//--------------------------------------------------------------------
/**
* Returns the raw array of available routes.
*
* @param null $verb
*
* @return array
*/
public function getRoutes($verb = null): array
{
if (empty($verb))
{
$verb = $this->getHTTPVerb();
}
// Since this is the entry point for the Router,
// take a moment to do any route discovery
// we might need to do.
$this->discoverRoutes();
$routes = [];
if (isset($this->routes[$verb]))
{
// Keep current verb's routes at the beginning so they're matched
// before any of the generic, "add" routes.
if (isset($this->routes['*']))
{
$extraRules = array_diff_key($this->routes['*'], $this->routes[$verb]);
$collection = array_merge($this->routes[$verb], $extraRules);
}
foreach ($collection as $r)
{
$key = key($r['route']);
$routes[$key] = $r['route'][$key];
}
}
return $routes;
}
//--------------------------------------------------------------------
/**
* Returns one or all routes options
*
* @param string $from
*
* @return array
*/
public function getRoutesOptions(string $from = null)
{
return $from ? $this->routesOptions[$from] ?? [] : $this->routesOptions;
}
//--------------------------------------------------------------------
/**
* Returns the current HTTP Verb being used.
*
* @return string
*/
public function getHTTPVerb(): string
{
return $this->HTTPVerb;
}
//--------------------------------------------------------------------
/**
* Sets the current HTTP verb.
* Used primarily for testing.
*
* @param string $verb
*
* @return $this
*/
public function setHTTPVerb(string $verb)
{
$this->HTTPVerb = $verb;
return $this;
}
/**
* A shortcut method to add a number of routes at a single time.
* It does not allow any options to be set on the route, or to
* define the method used.
*
* @param array $routes
* @param array $options
*
* @return RouteCollectionInterface
*/
public function map(array $routes = [], array $options = null): RouteCollectionInterface
{
foreach ($routes as $from => $to)
{
$this->add($from, $to, $options);
}
return $this;
}
//--------------------------------------------------------------------
/**
* Adds a single route to the collection.
*
* Example:
* $routes->add('news', 'Posts::index');
*
* @param string $from
* @param array|string $to
* @param $options
*
* @return RouteCollectionInterface
*/
public function add(string $from, $to, array $options = null): RouteCollectionInterface
{
$this->create('*', $from, $to, $options);
return $this;
}
//--------------------------------------------------------------------
/**
* Adds a temporary redirect from one route to another. Used for
* redirecting traffic from old, non-existing routes to the new
* moved routes.
*
* @param string $from The pattern to match against
* @param string $to Either a route name or a URI to redirect to
* @param integer $status The HTTP status code that should be returned with this redirect
*
* @return RouteCollection
*/
public function addRedirect(string $from, string $to, int $status = 302)
{
// Use the named route's pattern if this is a named route.
if (array_key_exists($to, $this->routes['*']))
{
$to = $this->routes['*'][$to]['route'];
}
$this->create('*', $from, $to, ['redirect' => $status]);
return $this;
}
//--------------------------------------------------------------------
/**
* Determines if the route is a redirecting route.
*
* @param string $from
*
* @return boolean
*/
public function isRedirect(string $from): bool
{
foreach ($this->routes['*'] as $name => $route)
{
// Named route?
if ($name === $from || key($route['route']) === $from)
{
return isset($route['redirect']) && is_numeric($route['redirect']);
}
}
return false;
}
//--------------------------------------------------------------------
/**
* Grabs the HTTP status code from a redirecting Route.
*
* @param string $from
*
* @return integer
*/
public function getRedirectCode(string $from): int
{
foreach ($this->routes['*'] as $name => $route)
{
// Named route?
if ($name === $from || key($route['route']) === $from)
{
return $route['redirect'] ?? 0;
}
}
return 0;
}
//--------------------------------------------------------------------
//--------------------------------------------------------------------
// Grouping Routes
//--------------------------------------------------------------------
/**
* Group a series of routes under a single URL segment. This is handy
* for grouping items into an admin area, like:
*
* Example:
* // Creates route: admin/users
* $route->group('admin', function() {
* $route->resource('users');
* });
*
* @param string $name The name to group/prefix the routes with.
* @param $params
*
* @return void
*/
public function group($name, ...$params)
{
$oldGroup = $this->group;
$oldOptions = $this->currentOptions;
// To register a route, we'll set a flag so that our router
// so it will see the group name.
$this->group = ltrim($oldGroup . '/' . $name, '/');
$callback = array_pop($params);
if ($params && is_array($params[0]))
{
$this->currentOptions = array_shift($params);
}
if (is_callable($callback))
{
$callback($this);
}
$this->group = $oldGroup;
$this->currentOptions = $oldOptions;
}
//--------------------------------------------------------------------
//--------------------------------------------------------------------
// HTTP Verb-based routing
//--------------------------------------------------------------------
// Routing works here because, as the routes Config file is read in,
// the various HTTP verb-based routes will only be added to the in-memory
// routes if it is a call that should respond to that verb.
//
// The options array is typically used to pass in an 'as' or var, but may
// be expanded in the future. See the docblock for 'add' method above for
// current list of globally available options.
//
/**
* Creates a collections of HTTP-verb based routes for a controller.
*
* Possible Options:
* 'controller' - Customize the name of the controller used in the 'to' route
* 'placeholder' - The regex used by the Router. Defaults to '(:any)'
*
* Example:
* $route->resource('photos');
*
* // Generates the following routes:
* HTTP Verb | Path | Action | Used for...
* ----------+-------------+---------------+-----------------
* GET /photos index display a list of photos
* GET /photos/new new new a specific photo
* GET /photos/{id}/edit edit edit a specific photo
* GET /photos/{id} show display a specific photo
* POST /photos create create a new photo
* PUT/PATCH /photos/{id} update update an existing photo
* DELETE /photos/{id} delete delete an existing photo
*
* If 'websafe' option is present, the following paths are also available:
*
* POST /photos/{id} update
* DELETE /photos/{id}/delete delete
*
* @param string $name The name of the controller to route to.
* @param array $options An list of possible ways to customize the routing.
*
* @return RouteCollectionInterface
*/
public function resource(string $name, array $options = null): RouteCollectionInterface
{
// In order to allow customization of the route the
// resources are sent to, we need to have a new name
// to store the values in.
$new_name = ucfirst($name);
// If a new controller is specified, then we replace the
// $name value with the name of the new controller.
if (isset($options['controller']))
{
$new_name = ucfirst(filter_var($options['controller'], FILTER_SANITIZE_STRING));
}
// In order to allow customization of allowed id values
// we need someplace to store them.
$id = $this->placeholders[$this->defaultPlaceholder] ?? '(:segment)';
if (isset($options['placeholder']))
{
$id = $options['placeholder'];
}
// Make sure we capture back-references
$id = '(' . trim($id, '()') . ')';
$methods = isset($options['only']) ? is_string($options['only']) ? explode(',', $options['only']) : $options['only'] : ['index', 'show', 'create', 'update', 'delete', 'new', 'edit'];
if (isset($options['except']))
{
$options['except'] = is_array($options['except']) ? $options['except'] : explode(',', $options['except']);
$c = count($methods);
for ($i = 0; $i < $c; $i ++)
{
if (in_array($methods[$i], $options['except']))
{
unset($methods[$i]);
}
}
}
if (in_array('index', $methods))
{
$this->get($name, $new_name . '::index', $options);
}
if (in_array('new', $methods))
{
$this->get($name . '/new', $new_name . '::new', $options);
}
if (in_array('edit', $methods))
{
$this->get($name . '/' . $id . '/edit', $new_name . '::edit/$1', $options);
}
if (in_array('show', $methods))
{
$this->get($name . '/' . $id, $new_name . '::show/$1', $options);
}
if (in_array('create', $methods))
{
$this->post($name, $new_name . '::create', $options);
}
if (in_array('update', $methods))
{
$this->put($name . '/' . $id, $new_name . '::update/$1', $options);
$this->patch($name . '/' . $id, $new_name . '::update/$1', $options);
}
if (in_array('delete', $methods))
{
$this->delete($name . '/' . $id, $new_name . '::delete/$1', $options);
}
// Web Safe?
if (isset($options['websafe']))
{
if (in_array('update', $methods))
{
$this->post($name . '/' . $id, $new_name . '::update/$1', $options);
}
if (in_array('delete', $methods))
{
$this->post($name . '/' . $id . '/delete', $new_name . '::delete/$1', $options);
}
}
return $this;
}
//--------------------------------------------------------------------
/**
* Specifies a single route to match for multiple HTTP Verbs.
*
* Example:
* $route->match( ['get', 'post'], 'users/(:num)', 'users/$1);
*
* @param array $verbs
* @param $from
* @param $to
* @param array $options
*
* @return \CodeIgniter\Router\RouteCollectionInterface
*/
public function match(array $verbs = [], string $from, $to, array $options = null): RouteCollectionInterface
{
foreach ($verbs as $verb)
{
$verb = strtolower($verb);
$this->{$verb}($from, $to, $options);
}
return $this;
}
//--------------------------------------------------------------------
/**
* Specifies a route that is only available to GET requests.
*
* @param $from
* @param $to
* @param array $options
*
* @return \CodeIgniter\Router\RouteCollectionInterface
*/
public function get(string $from, $to, array $options = null): RouteCollectionInterface
{
$this->create('get', $from, $to, $options);
return $this;
}
//--------------------------------------------------------------------
/**
* Specifies a route that is only available to POST requests.
*
* @param $from
* @param $to
* @param array $options
*
* @return \CodeIgniter\Router\RouteCollectionInterface
*/
public function post(string $from, $to, array $options = null): RouteCollectionInterface
{
$this->create('post', $from, $to, $options);
return $this;
}
//--------------------------------------------------------------------
/**
* Specifies a route that is only available to PUT requests.
*
* @param $from
* @param $to
* @param array $options
*
* @return \CodeIgniter\Router\RouteCollectionInterface
*/
public function put(string $from, $to, array $options = null): RouteCollectionInterface
{
$this->create('put', $from, $to, $options);
return $this;
}
//--------------------------------------------------------------------
/**
* Specifies a route that is only available to DELETE requests.
*
* @param $from
* @param $to
* @param array $options
*
* @return \CodeIgniter\Router\RouteCollectionInterface
*/
public function delete(string $from, $to, array $options = null): RouteCollectionInterface
{
$this->create('delete', $from, $to, $options);
return $this;
}
//--------------------------------------------------------------------
/**
* Specifies a route that is only available to HEAD requests.
*
* @param $from
* @param $to
* @param array $options
*
* @return \CodeIgniter\Router\RouteCollectionInterface
*/
public function head(string $from, $to, array $options = null): RouteCollectionInterface
{
$this->create('head', $from, $to, $options);
return $this;
}
//--------------------------------------------------------------------
/**
* Specifies a route that is only available to PATCH requests.
*
* @param $from
* @param $to
* @param array $options
*
* @return \CodeIgniter\Router\RouteCollectionInterface
*/
public function patch(string $from, $to, array $options = null): RouteCollectionInterface
{
$this->create('patch', $from, $to, $options);
return $this;
}
//--------------------------------------------------------------------
/**
* Specifies a route that is only available to OPTIONS requests.
*
* @param $from
* @param $to
* @param array $options
*
* @return \CodeIgniter\Router\RouteCollectionInterface
*/
public function options(string $from, $to, array $options = null): RouteCollectionInterface
{
$this->create('options', $from, $to, $options);
return $this;
}
//--------------------------------------------------------------------
/**
* Specifies a route that is only available to command-line requests.
*
* @param $from
* @param $to
* @param array $options
*
* @return \CodeIgniter\Router\RouteCollectionInterface
*/
public function cli(string $from, $to, array $options = null): RouteCollectionInterface
{
$this->create('cli', $from, $to, $options);
return $this;
}
//--------------------------------------------------------------------
/**
* Limits the routes to a specified ENVIRONMENT or they won't run.
*
* @param string $env
* @param \Closure $callback
*
* @return RouteCollectionInterface
*/
public function environment(string $env, \Closure $callback): RouteCollectionInterface
{
if (ENVIRONMENT === $env)
{
$callback($this);
}
return $this;
}
//--------------------------------------------------------------------
/**
* Attempts to look up a route based on it's destination.
*
* If a route exists:
*
* 'path/(:any)/(:any)' => 'Controller::method/$1/$2'
*
* This method allows you to know the Controller and method
* and get the route that leads to it.
*
* // Equals 'path/$param1/$param2'
* reverseRoute('Controller::method', $param1, $param2);
*
* @param string $search
* @param array ...$params
*
* @return string|false
*/
public function reverseRoute(string $search, ...$params)
{
// Named routes get higher priority.
foreach ($this->routes as $verb => $collection)
{
if (array_key_exists($search, $collection))
{
return $this->fillRouteParams(key($collection[$search]['route']), $params);
}
}
// If it's not a named route, then loop over
// all routes to find a match.
foreach ($this->routes as $verb => $collection)
{
foreach ($collection as $route)
{
$from = key($route['route']);
$to = $route['route'][$from];
// Lose any namespace slash at beginning of strings
// to ensure more consistent match.
$to = ltrim($to, '\\');
$search = ltrim($search, '\\');
// If there's any chance of a match, then it will
// be with $search at the beginning of the $to string.
if (strpos($to, $search) !== 0)
{
continue;
}
// Ensure that the number of $params given here
// matches the number of back-references in the route
if (substr_count($to, '$') !== count($params))
{
continue;
}
return $this->fillRouteParams($from, $params);
}
}
// If we're still here, then we did not find a match.
return false;
}
//--------------------------------------------------------------------
/**
* Checks a route (using the "from") to see if it's filtered or not.
*
* @param string $search
*
* @return boolean
*/
public function isFiltered(string $search): bool
{
return isset($this->routesOptions[$search]['filter']);
}
//--------------------------------------------------------------------
/**
* Returns the filter that should be applied for a single route, along
* with any parameters it might have. Parameters are found by splitting
* the parameter name on a colon to separate the filter name from the parameter list,
* and the splitting the result on commas. So:
*
* 'role:admin,manager'
*
* has a filter of "role", with parameters of ['admin', 'manager'].
*
* @param string $search
*
* @return string
*/
public function getFilterForRoute(string $search): string
{
if (! $this->isFiltered($search))
{
return '';
}
return $this->routesOptions[$search]['filter'];
}
//--------------------------------------------------------------------
/**
* Given a
*
* @param string $from
* @param array|null $params
*
* @return string
*/
protected function fillRouteParams(string $from, array $params = null): string
{
// Find all of our back-references in the original route
preg_match_all('/\(([^)]+)\)/', $from, $matches);
if (empty($matches[0]))
{
return '/' . ltrim($from, '/');
}
// Build our resulting string, inserting the $params in
// the appropriate places.
foreach ($matches[0] as $index => $pattern)
{
// Ensure that the param we're inserting matches
// the expected param type.
$pos = strpos($from, $pattern);
if (preg_match("|{$pattern}|", $params[$index]))
{
$from = substr_replace($from, $params[$index], $pos, strlen($pattern));
}
else
{
throw RouterException::forInvalidParameterType();
}
}
return '/' . ltrim($from, '/');
}
//--------------------------------------------------------------------
/**
* Does the heavy lifting of creating an actual route. You must specify
* the request method(s) that this route will work for. They can be separated
* by a pipe character "|" if there is more than one.
*
* @param string $verb
* @param string $from
* @param $to
* @param array|null $options
*/
protected function create(string $verb, string $from, $to, array $options = null)
{
$prefix = is_null($this->group) ? '' : $this->group . '/';
$from = filter_var($prefix . $from, FILTER_SANITIZE_STRING);
// While we want to add a route within a group of '/',
// it doens't work with matching, so remove them...
if ($from !== '/')
{
$from = trim($from, '/');
}
$options = array_merge((array) $this->currentOptions, (array) $options);
// Hostname limiting?
if (! empty($options['hostname']))
{
// @todo determine if there's a way to whitelist hosts?
if (strtolower($_SERVER['HTTP_HOST']) !== strtolower($options['hostname']))
{
return;
}
}
// Limiting to subdomains?
else if (isset($options['subdomain']) && ! empty($options['subdomain']))
{
// If we don't match the current subdomain, then
// we don't need to add the route.
if (! $this->checkSubdomains($options['subdomain']))
{
return;
}
}
// Are we offsetting the binds?
// If so, take care of them here in one
// fell swoop.
if (isset($options['offset']) && is_string($to))
{
// Get a constant string to work with.
$to = preg_replace('/(\$\d+)/', '$X', $to);
for ($i = (int) $options['offset'] + 1; $i < (int) $options['offset'] + 7; $i ++)
{
$to = preg_replace_callback(
'/\$X/', function ($m) use ($i) {
return '$' . $i;
}, $to, 1
);
}
}
// Replace our regex pattern placeholders with the actual thing
// so that the Router doesn't need to know about any of this.
foreach ($this->placeholders as $tag => $pattern)
{
$from = str_ireplace(':' . $tag, $pattern, $from);
}
// If no namespace found, add the default namespace
if (is_string($to) && strpos($to, '\\') === false)
{
$namespace = $options['namespace'] ?? $this->defaultNamespace;
$to = trim($namespace, '\\') . '\\' . $to;
}
// Always ensure that we escape our namespace so we're not pointing to
// \CodeIgniter\Routes\Controller::method.
if (is_string($to))
{
$to = '\\' . ltrim($to, '\\');
}
$name = $options['as'] ?? $from;
// Don't overwrite any existing 'froms' so that auto-discovered routes
// do not overwrite any application/Config/Routes settings. The app
// routes should always be the "source of truth".
// this works only because discovered routes are added just prior
// to attempting to route the request.
if (isset($this->routes[$verb][$name]))
{
return;
}
$this->routes[$verb][$name] = [
'route' => [$from => $to],
];
$this->routesOptions[$from] = $options;
// Is this a redirect?
if (isset($options['redirect']) && is_numeric($options['redirect']))
{
$this->routes['*'][$name]['redirect'] = $options['redirect'];
}
}
//--------------------------------------------------------------------
/**
* Compares the subdomain(s) passed in against the current subdomain
* on this page request.
*
* @param $subdomains
*
* @return boolean
*/
private function checkSubdomains($subdomains)
{
if (is_null($this->currentSubdomain))
{
$this->currentSubdomain = $this->determineCurrentSubdomain();
}
if (! is_array($subdomains))
{
$subdomains = [$subdomains];
}
// Routes can be limited to any sub-domain. In that case, though,
// it does require a sub-domain to be present.
if (! empty($this->currentSubdomain) && in_array('*', $subdomains))
{
return true;
}
foreach ($subdomains as $subdomain)
{
if ($subdomain === $this->currentSubdomain)
{
return true;
}
}
return false;
}
//--------------------------------------------------------------------
/**
* Examines the HTTP_HOST to get a best match for the subdomain. It
* won't be perfect, but should work for our needs.
*
* It's especially not perfect since it's possible to register a domain
* with a period (.) as part of the domain name.
*/
private function determineCurrentSubdomain()
{
// We have to ensure that a scheme exists
// on the URL else parse_url will mis-interpret
// 'host' as the 'path'.
$url = $_SERVER['HTTP_HOST'];
if (strpos($url, 'http') !== 0)
{
$url = 'http://' . $url;
}
$parsedUrl = parse_url($url);
$host = explode('.', $parsedUrl['host']);
if ($host[0] === 'www')
{
unset($host[0]);
}
// Get rid of any domains, which will be the last
unset($host[count($host)]);
// Account for .co.uk, .co.nz, etc. domains
if (end($host) === 'co')
{
$host = array_slice($host, 0, -1);
}
// If we only have 1 part left, then we don't have a sub-domain.
if (count($host) === 1)
{
// Set it to false so we don't make it back here again.
return false;
}
return array_shift($host);
}
//--------------------------------------------------------------------
}
Jim Parry